x^2-2x=2x-4

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Solution for x^2-2x=2x-4 equation:


Simplifying
x2 + -2x = 2x + -4

Reorder the terms:
-2x + x2 = 2x + -4

Reorder the terms:
-2x + x2 = -4 + 2x

Solving
-2x + x2 = -4 + 2x

Solving for variable 'x'.

Reorder the terms:
4 + -2x + -2x + x2 = -4 + 2x + 4 + -2x

Combine like terms: -2x + -2x = -4x
4 + -4x + x2 = -4 + 2x + 4 + -2x

Reorder the terms:
4 + -4x + x2 = -4 + 4 + 2x + -2x

Combine like terms: -4 + 4 = 0
4 + -4x + x2 = 0 + 2x + -2x
4 + -4x + x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
4 + -4x + x2 = 0

Factor a trinomial.
(2 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {2, 2}

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